1st position: All slides in
2nd position: 1st slide out
3rd position: 2nd slide out
4th position: 1st and 2nd slide out
5th position: 3rd slide out
6th position: 1st and 3rd slide out
7th position: 2nd and 3rd slide out
Valves:
(No valve) - 1
1st valve (right thumb) - 2
2nd valve (left index finger) - 3
3rd valve (right index finger) - 4
To play the melody of "Happy Birthday" on trombone, you would use the following positions and valves:
Verse 1:
1st phrase: 2nd position, F (1)
2nd phrase: 1st position, Eb (no valve)
3rd phrase: 2nd position, F (1)
Verse 2:
1st phrase: 2nd position, G (1)
2nd phrase: 1st position, F (no valve)
3rd phrase: 6th position, Bb (1, 3)
Chorus:
1st phrase: 2nd position, C (1)
2nd phrase: 1st position, Bb (no valve)
3rd phrase: 2nd position, C (1)
Verse 3:
1st phrase: 2nd position, D (1)
2nd phrase: 1st position, A (no valve)
3rd phrase: 2nd position, D (1)
Verse 4:
1st phrase: 2nd position, E (1)
2nd phrase: 1st position, Bb (no valve)
3rd phrase: 2nd position, E (1)